<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script type="text/javascript" src="jquery-3.6.0.min.js"></script>
	</head>
	<body>
		<input id="in1"  type="text"/>
		<button type="button" onclick="inss()">提交</button>
		<script type="text/javascript">
			function inss(){
				let in1=$("#in1").val(45613);
				$("#in1").val("123")
				console.log(in1);
       document.getElementsByTagName("p")[0].innerHTML="123"
			}
		</script>
	</body>
</html>
